Adventures with red plastic mulch

Posted on May 31st, 2007 – 5:44 AM
By Robyn Dochterman
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Photo copyright National Geographic

Bigger, faster, more. Who wouldn’t want that when it comes to tomatoes?

Driven by catalog hype (I was very succeptible last January when all the seed and supply catalogs hit my mailbox), I decided to try some red plastic mulch on my tomatoes this year. Not only would it improve the performance of my ‘maters, it promised, but it would help me overcome the price my tomatoes pay for my lack of dedication to weeding, too. Why not experiment? I decided to order some in the name of science.

On Monday, I finally unrolled the package of red plastic mulch and immediately learned some important things:

First, put the mulch down before you plant tomatoes. If you forgot until after you’d planted your tomatoes (um, like me), it’s not too late. But it is a bit challenging to unroll the plastic, lay it over your tomatoes and cut holes for the seedlings. Add a lively breeze, and you have…a circus.

Second, if any of your neighbors drive by while you are wrestling with the twisting, blowing plastic, explain it away as art (I had to, since I spent a good half hour looking like the artist Christo).

Third, don’t forget that if you’re going to mulch with plastic, you need to do drip irrigation to get water to the plant. So, now I’ve got something else on my gardening “to-do” list.

I should have asked you if you’ve used red plastic mulch before, and how it worked, and what kind of advice you have for me (but it was January and, frankly, you just weren’t around much).

But for others who prefer to do their homework before jumping in, please hop into the discussion below and add your two cents.

If you’re curious about this stuff, there’s some evaluation of it here and a more professional assessment at the Center for Plasticulture at Penn State (who knew?).

6 Responses to "Adventures with red plastic mulch"

Judybusy says:

May 31st, 2007 at 2:17 pm

I hope you remembered to do a control plot with no red plastic mulch so you have a rigorous test design! Please let us know if the mulch seems to make any difference, or just adds to the beauty of the garden!

Al says:

May 31st, 2007 at 2:24 pm

I use the red plastic mulch. Not ony do you need to wary of wind when installing it, but you need to weigh it down with boards, rocks, or dig in the edges to keep it in place during the weeks ahead in the growing season.

It is very effective in preventing blossom end rot.

Robyn Dochterman says:

May 31st, 2007 at 3:09 pm

Judy, I ran out of the red stuff after about 14 plants, so that leaves about 14 to be my control plot. I will definitely publish results!

Al, thanks for your advice. I first tried to put dirt over the edges to hold them down, but soon switched to rocks (from the garden) and old cedar boards salvaged from a tall fence that blew down a couple of weeks ago. Good to know the mulch might have been worth my effort!

Margaret says:

June 1st, 2007 at 7:26 am

I used red plastic mulch this year and in years past (not last year). I grow different tomatoes almost every year so it’s not much of a control group. The biggest factor I have is watering and how well it gets done. Last year I did drip irrigation. Here’s my system: 8 oz waterbottles sunk next to each plant, with a dripper line inside each one. It allows for less evaporation while watering, I think. also a good way to deliver fertilizer, compost tea, fish emulsion, what ever your secret formula is. If I had the room to put more or bigger bottles I would but I am crowded for space as it is, in my city garden.

Robyn Dochterman says:

June 1st, 2007 at 10:23 am

Hi Margaret. I love your water bottle plan. How did you set up the dripper line from each one? This year I am trying Ben’s waterboys for my new fruit trees. If I could afford more, they might work well for my tomatoes, too.

Margaret says:

June 1st, 2007 at 11:39 pm

I have multiple small lines coming from the main line (toro and rainbird stuff is what I use) Each line goes into a bottle. I also have some drip hose (like a mini soaker hose) going around the edges of the bed since I have basil on the edges and also baby leeks and hot peppers in that same bed.